/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.causeway.viewer.graphql.model.fetcher;

import graphql.schema.DataFetcher;
import graphql.schema.DataFetchingEnvironment;

import org.apache.causeway.applib.services.bookmark.BookmarkService;

import lombok.val;

public class BookmarkedPojoFetcher implements DataFetcher<Object> {
    private final BookmarkService bookmarkService;

    public BookmarkedPojoFetcher(BookmarkService bookmarkService) {
        this.bookmarkService = bookmarkService;
    }

    @Override
    public Object get(DataFetchingEnvironment dataFetchingEnvironment) {

        val sourcePojo = BookmarkedPojo.sourceFrom(dataFetchingEnvironment);

        return bookmarkService.bookmarkFor(sourcePojo)
                .map(bookmark -> new BookmarkedPojo(bookmark, bookmarkService))
                .orElseThrow();
    }
}
